| 摘要 |
PROBLEM TO BE SOLVED: To prevent the breakage of a metallic mold at the time of bending or at the time of the home position setting of a metallic mold by accurately measuring the distance between blades and to obtain the real blade thickness by accurately designating the starting position of light invalidity in an optical safety device. SOLUTION: A bending device has a butting part 5, which is movable in a longitudinal direction, in a lateral direction, and in a vertical direction on a stretch 25, and has a sensor mounted on the butting part 5. A position H1 on the upper surface of a die D and a position H2 of the tip part of a punch P are detected by the sensor 30. The distance between blades, H=H2-H1, is determined based on the detected positions H1, H2. COPYRIGHT: (C)2004,JPO
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